Pipe-lifting machine.



No. 697,7l9. Patented Apr. I5, I902.

A. HOGENSON.

PIPE LIFTING MACHINE.

(Application filed Nov. 15, 1901.)

(No Model.)

Warren STATES ATENT @FFICE.

ANTON HOGENSON, OF OALMAR, IOVVA.'

PIPE=LIFTING MACHINE.

SPEGIFIGATION forming part of Letters Patent No. 697,719, dated. April 15, 1902.

Application filed November 15, 1901. Serial No. 82,423. (No model.)

To (0Z5 whom, it may concern:

Be itknown that LANTON Hocnnsoma citizen of the United States, residing at Oalmar, in the county of \Vinneshiek and State of Iowa, have invented certain new and useful Improvements in Pipe-Lifting Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to mechanism for lifting pipes or rods from wells, and has for its object to provide a device of this kind which will lift a pipe or rod with a minimum amount of exertion.

With this object in view my invention consists in the novel construction of my clutches.

Myinvention also consists in the novel construction of the pipe-lifter frame.

My invention also consists in the novel manner of guiding the pipe while the same is being lifted from or lowered into a well.

My invention also consists in certain other novel features of construction and in combination of parts, which will be hereinafter fully described, and specifically pointed outin the appended claims.

Referring to the accompanying drawings, Figure 1 is a perspective view of the pipelifter in an operative position. Fig. 2 is a perspective view of one of the pipe-clutches. Fig. 3 is a perspective view of the pipe-catch;

and Fig. 4 is a detail view of the lifting-lever, I

guiding-rollers, and brackets.

Like numerals of reference indicate the same parts throughout the several figures, in which-- 1 is the pipe-lifter, composed of a frame 2, substantially like an inverted U, and constructed, preferably, of angleiron.

3 indicates the bases, having suitable supports 4.

5 is a double lifting-lever centrally fulcrumed to a bracket 6, which is securely bolted or riveted to the frame 2 and also to a cross-support 7 of angle-iron. 8 indicates a bracket which is bolted or riveted to said cross-support and which is secured to said bracket 6 by means of a pin, which pin forms a fulcrum for the double lifting-lever. I provide the bracket 6 with. two perforations or openings 10, within which the guiderod 11 is inserted, said guide-rod resting upon the brace 7 of angle-iron.

12 indicates the guide-rollers, which are journaled on pins 13, secured in the bracket 8. Said guide-rollers are of a peculiar construction and increase in circumference toward their back. The peripheries of said rollers almost contact with each other at their rear ends, while a considerable space is left between the peripheries of the rollers at their forward point, so as to allow the pipe to enter between said rollers.

1-l indicates the clutches, consisting of sections 15 and 16. Said section 16 is of a considerable shorter length than section 15 and is provided at its inner end with a hook 17, which extends across and over the shank of said section 15. Said sections 15 and 16 are connected at their outer ends by means of a threaded pin 18, which is pivoted to section 16 and threaded in section 15. Said sections 15 and 16 are so constructed that when they are in a closed position a circular hole or opening 19 is formed between the same, within which the pipe 20 is inserted.

21 indicates the connecting-rods which con- 2 nect the pipe-clamps with the double liftinglever. It will be noticed that I provide a series of holes in said lever, within which said connecting-rods may be inserted for the purpose of increasing or diminishing the lift of the clutches or clamps. It will also be noticed that the connecting-rods 21 are of a different length, as one clamp or clutch may most always be below the other, as will be hereinafter fully described.

22 indicates the pipe-catch, which is provided with a circular opening 23. Said pipecatch is placed on the guide-rod 11 for the purpose of holding a pipe-section in an upright position in order to uncouple the inner tube or pipe. At the top of said guide-rod I provide asuitable guide 24, constructed, preferably, like a split ring, and as the pipe is lifted from the well it is guidedinto said guide and securely holds the pipe in an upright position.

Having thus fully described the several parts of my invention, its operation is as follows:

When it is desired to raise a pipe from or lower a pipe into a well, the clamps or clutches the pipe-catch 22.

are opened by means of raising the clampsection 16, as shown in dotted line in Fig. 2, so that the hook at the end thereof is disengaged from the shank of section 15. Said clamps or clutches are then closed around the pipe to be lowered or raised. One clamp or clutch is below the other, as shown in Fig. 1. When the handle of said lifting-lever is lowered, the clam p or clutch on the other side of the fulcrum is raised and the clamp or clutch between the fulcrum and the handle is lowered, as is obvious. This throws the entire weight of the pipe upon the clamp or clutch that is being raised and the edges of the circular opening of said clamp or clutch gripping the pipe and raising the same. When, however, the handle of the lifting-lever is raised, the clamp or clutch between the handle and the fulcrum is also raised, and the clamp or clutch on the other side of the fulcrum is lowered. In this instance the weight of the pipeis shifted on the clutch nearest the handle, and as said clutch rises it lifts the pipe. The other clutch being lowered at the same time is now in position to take its turn when the lever-handle is again lowered. Said pipe is at first being raised between the rollers 12, and by reason of their peculiar construction, as before described, said pipe is always in contact with said rollers so long asthe same is in position. I have arranged my guide-rod so that the same is not exactly perpendicular; but it inclines forwardly, so

that the guide at the top thereof is directly over the guide-rollers 12. When one of the pipe-sections is clear of the guide-rollers, the same is uncoupled and the endthereof rests on In this manner the lifted pipe-sections can be uncoupled, and the inner tube or pipe can also be uncoupled without thev assistance ofan extra hand. Ihave found that the openings in said pipe clamps or clutches are much more efficient when made rou nd than when made square, as said clamps or clutches can be made to fit difierent-size pipes much more readily and with much better results than when said openings are square. When itis desired to increase or diminishthe size of the openings in said clamps or clutches, the' shorter section 16 is revolved on section '15 in such a manner as to thread or unthread the pin 18, which is pivoted to section 16. When it is desired to diminish the opening in said clamp or clutch, said threaded section is turned so as to thread the pin 18 into the longer section 15, and when it is desired to increase the opening in said clutches the guide-rod and also causes a binding upon any other guide that may be located at any other point on the machine. The peculiar construction of the guide-rollers makes it possible for said pipe to lean backwardly or to either side and obviates any binding of the pipe or rod with the pipe-guides. They will also guide pipes of different sizes and diameters without any adjustment. When it is desired to lower a pipe into a Well, said sections-are closed about the pipe, as described, before operating the lever, as first one clutch and then the other is lightly slid up the pipe, which throws the weight on the opposite clutch and allows the pipeto descend.

What I claimas new, and desire to secure by Letters Patent of the United States, is-

1. In a pipe-lifting mechanism, the combination of an in verted- U -shaped frame, brackets secured thereto, a guide-rod secured in one of said brackets, and a lifting-lever fulcrumed between said brackets, guide-rollers journaled in front of said 1ifting-lever,said

rollers increasing in circumference toward their rear ends, whereby the pipe is supported at its rear and sides, clamps or clutches connected to said lifting-lever, substantially as described.

2. In a pipe-lifting mechanism, the combination with a frame, and pipe-lifting means of guide-rollers secured to said frame; the rear ends of said rollers being greaterin diameter than the front ends, whereby pipes of ,a different diameter may be accommodated ANTON HOGENSON.

Witnesses:

J. MEGG, OTTO JAcoBsoN. 

